Tin pot



Dec. 16, 1930. J. T. MGQUISTN 1,785,322

TIN POT Filsd Jan. l2, 1927 Patented Dec. 16, 1930 UNITED STATS PATENT OFFICE JESSE T. MCQUISTON, 0F SHARON, PENNSYLVANIA, ASSIGNOR TO AMERICAN SHEET AND TIN PLATE COMPANY, 0F PITTSBURGH, PENNSYLVANA, A COIEMEORATION'0Fk NEW JERSEY TIN POT Application filed January 12, 1927.

This invention relates to tin pots and more particularly to tinning pots having plate cooling lances, and has for its object the provision of a cooling coil adapted for use 1n connection with the cooling lances and to cool the body of oil maintained on the top of the body of molten tin in the exit side of the p Another object is to provide a novel connection between the cooling lances and the cooling coil in the oil whereby the air passing to the lances may be passed through the coil prior to entering the lances, or may be bypassed by the coil and direct to the lances, as desired.

In the drawings- Figure 1 is a plan view showing an outline of a tin pot having this invention applied thereto.

Figure 2 is a sectional side elevation showing an -outline of a tin pot, including the feedout rolls and having this invention applied thereto.

Figure 3 is a sectional elevation on the line III-III of Figure 1.

Referring more particularly to the drawings, the letter A designates a tinning pot, in itself an old and approved form. The pot is separated transversely by a vertical wall 0r partition 2 into compartments B and C. The lower edge oit' this partition 2 terminates above the bottom of the tinning pot, and the upper edge of a rib or projection 3 on the bottom of the pot deiines the width or vertical dimensions of a narrow passage or opening D, through which the plates being tinned pass from the compartment B to the compartment C of the pot A.

The side walls of the compartment C at the exit side of the pot are extended upwardly so that this compartment is considerably. deeper than the compartment B, this old and wellknown construction enabling a body of oil, generally palm-oil, of the requisite depth or thickness, to be maintained on top of the molten tin in the exit compartment C. A thin layer of flux is normally maintained on top of the tin in the compartment B.

The usual feed rollers (not shown) will, of course, be provided in the compartment B,

Serial No. 169,651.

while the usual feed-out rollers 4 and catcher rollers 5 are provided in the compartment C to feed the plates out of the tinning pot A.

A pair of cooling lances 6 and 7 in the form of parallel pipes are arranged between the feed-out rollers 4 and 5 and are spaced so that the plates being fed by the rollers 4 into the bite of the rollers 5 will pass therebetween. The opposite or inner sides of the pipes are provided with suitable slots or openings through which air under pressure is discharged against the plates to cool the plates as they pass from the rollers 4 to the rollers 5.

The lances 6 and 7 are connected together at one end by a connecting conduit 8, and the other end of the lance 7 is closed by a cap 9, while the other end of the lance 6 is connected to an air supply pipe lleading from any suitablesource of air supply.

A cooling coil 12 is mounted in the compartment C above the tin level and within the body of oil and serves to cool the oil. The coil 12 has its inlet and outlet ends connected to vertical pipes or conduits 13 and 14, respectively, which pipes are connected to horizontal branch conduits 15 and 16, respectively. The branch conduits 15 and 16 are each connected to the air supply pipe 10.

rFhe branch conduits 15 and 16 are provided with shut-oit valve 17 and 18, respectively, and the supply pipe 10 is provided with a shut-off yvalve 19.

1n operation, when it is desired to operate the cooling lances 6 and 7 without the coil 12, the valves 17 and 18 will be closed and the valve 19 opened thereby permitting air from the supply pipe l() to flow directly to the lances 6 and l. Then the oil becomes too hot and it is desired to lower its temperature, it is necessary to operate the coil l2. Therefore, the valves 17 and 18 will be opened and the valve 19 closed, so that'the air irom the supply pipe 10 will be forced to enter lie coil 12 through the branch conduit 16 and pipe 14 and llow through the coil 12, and be discharged through the pipe 13 and branch conduit 15 into the pipe 10 from which it will enter the lances 6 and 7.

The air during its passage through the toV coil 12 Will absorb sufficient heat to cool the oil7 and after the oil has been cooled to the proper temperature, the valves 17 18 and 19 will be reversed to again pass the air direct to the cooling lances 6 and 7 l/Vhile I have shown and described one specific embodiment of my invention, it Will be understood that I do not Wish to be limited thereto since various modifications may be made Without departing from the scope of my invention as defined in the appended claims.

I claiml. rIhe combination With a tin pot having a pair of plate cooling lances, of a cooling coil mounted in the exit side of the pot to cool the body of oil normally maintained on the tin, a source of air supply for said air lances and said coil, and means for controlling the How of air to said coil and said lances so that the air may be caused to flow through said coil before entering said lances or to said lances direct as desired.

2. The combination with a tin pot having a pair of plate cooling lances, of a cooling coil mounted in the body of oil normally maintained above the tin level on the exit side of said pot so as to cool the oil, a single source of air to said coil and said lances, and means for controlling the flow of air from said source to said coil and said lances, sai-d means being adapted to direct the air` through said coil before entering said lances or to said lances direct as desired.

3. The combination with a tin pot having a pair of plate cooling lances, of a cooling coil mounted in the body of oil normally maintained above the tin level on the exit side of said pot so as to cool the oil, a conduit connecting the outlet `end of said cooling coil and the inlet end of said cooling lances, and a source of air supply connected to the inlet end of said cooling coil whereby the air Will be directed through saidV cooling coil and then through said lances.

In testimony whereof, I have hereunto signed my name.

JEssE' T. MGQUIsroN. 

